<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    var money=prompt("钱包中的金额是")
    if (money>=2000){
        alert("请大家吃西餐")
    }else if (money>=1500&money<2000){
        alert("请大家吃快餐")
    }else if (money>=1000&money<1500){
        alert("请大家喝饮料")
    }else if (money>=500&money<1000){
        alert("请大家吃棒棒糖")
    }else {
        alert("班长下次把钱带够")
    }
</script>
</body>
</html>